Leapers / Utg AR 15 lower parts with Blackrifledepot
4 min readTop Leapers / Utg AR 15 lower parts? In 1956, designer Eugene Stoner presented his Armalite Model 10 design to the United States military as a possible replacement for the famous M1 Garand. Eugene Stoner was well known for being quite the designer and engineer, but will forever be known for his designs that led to the infamous AR 15. The United States Army was, at the time, searching for a new service rifle that could be chambered in 7.62 NATO which had been adopted only two years earlier. While Stoner’s AR 10 design was not eventually adopted, it did not go unnoticed and was considered by some other nations, such as Spain, and some commercial variants were eventually made. Instead of the AR 10 design, the United States military instead went with the Springfield M14. At the time, they felt this rifle was superior for many reasons, such as reliability, a proven track record on the design, and build quality. Unfortunately, this gun was heavy and many argued that more and more modern firefight engagements were being fought much closer than the 600 or more yards that the 7.62 NATO was originally intended for.
Keymod gets its name from the slots in the system that look like keyholes. To use a keymod handguard, all you have to do is place the mounting lug in the keyhole and slide it to the narrower end to tighten your attachment securely to the firearm. It is extremely easy to use and nowhere near as heavy or bulky as the picatinny system. Overall, this system is probably the most familiar and the longest running system of them all. If the additional weight and bulk of the picatinny platform doesn’t bother you, then there is nothing wrong with this system and it is a tried and true design. You will be pretty much guaranteed mounting for just about any accessory and won’t need to spend extra for any parts. This is probably also the cheapest option out of all of them as well.
There are plenty of misconceptions when it comes to the actual steel used to create an AR 15 barrel. To make things a little less complicated, there are basically 7 different types of barrel steels used to make these barrels, and they can be divided into two categories: carbon and stainless steel. Carbon barrel steels include 4140 steel, 4150 steel, and chromium-molybdenum-vanadium (CMV) which is also called 41V50. The different types of stainless barrels include 410 stainless, 416 stainless, 416r stainless, and 17-4 PH stainless. Most shooters will not want to get into the fine details about the subtle differences between each steel, but the biggest question most people ask is whether they should buy carbon or stainless for their barrels. Discover more information on AR 15 Parts.
This 7.5” length pistol upper assembly makes for a very fun but boisterous range gun. We run our little AR pistol with a black nitride bolt carrier group and have put just over three thousand rounds thru our personal T&E gun without a hiccup. it’s a tiny package that runs and runs, and is about as much fun as you can have with a small AR pistol. I would stress that, in our experience, this is an upper assembly I’d go with for fun above practicality. I’d also warn you that 5.56 out of a 7.5” upper assembly is quite loud. Loud may even be an understatement. I’m fairly certain, that given a choice, I’d NOT want my home defense AR sporting a 7.5” barrel. That said, the next step up is a lot more practical in that regard.
Black Rifle Depot is a family owned and operated AR 15 Parts and AR 15 Accessories wholesale distributor based out of Bakersfield California. We offer a large variety of AR 15 Parts such as AR 15 Complete Uppers, AR 15 Barrels, AR 15 Bolt Carriers, AR 15 Handguards and AR 15 Lower Build Kits to customize your AR 15 Rifle from some of the top manufactures in the industry such as Aero Precision, Anderson Manufacturing, Faxon, Magpul Industries, and Odin works. With our continuous growing inventory and competitive prices, make Black Rifle Depot your one stop shop for AR 15 Parts and AR 15 Complete Uppers. Read even more info on this website.
For most handguards, the two most commonly used materials are polymer and aluminum. Both of these materials are very durable, and aluminum will usually going to be the stronger of the two. Aluminum can, however, emit a little more heat during an extended shooting session than a polymer handguard. Aluminum is much more resistant to heat, although it will heat up itself and can be hot under extreme conditions. If you do a lot of high volume shooting, aluminum is a great option for you. Polymer handguards will usually have a heat shield constructed of either steel or aluminum that will separate the actual polymer from the barrel. This helps dissipate the heat generated from the barrel, and there are also polymer handguards that will have a steel or aluminum framework to lighten them up and provide structural durability. Polymer does, however, have a lower melting point than aluminum. While it is super rare, under continuous and extreme firing, the heat from your barrel could warp or even melt the polymer handguard. Polymer does, however, provide a little more impact resistance than aluminum.